Isla Espíritu Santo, at part of it seen in the distance, is an island in the Sea of Cortez (Gulf of California), off the Mexican state of Baja California Sur. It is connected to Isla Partida. The area is protected under UNESCO as a biosphere, and its importance as an eco-tourism destination is the main factor. The islands are both uninhabited. Ensenada Grande beach, on Isla Partida, was voted the most beautiful beach in Mexico by The Travel Magazine and one of the top 12 beaches in the world.